Improvement in rotary engines



UNITED STATES PATENT GEEIoE.

CHARLES Gr. FOOTE, OF INDIANAPOLIS, INDIANA.

IMPROVEMENT IN ROTARY ENGINES.

Specification forming part of Letters Patent No. 82,820, dated October 6, 1868; antedated September 21, 1868.

To all whom it may concern.'

Be it known that I, CHARLES G. FooTE, of Indianapolis, in the county of Marion, and in the State of Indiana, have invented an Improved Rotary SteamEngine 5 and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the figures and letters of reference marked thereon.

The nature of the invention consists in the construction of the piston and slide-valve, said device to be made of cast -iron or any other suitable metal.

To enable others skilled in the art to make and use-my said invention, I proceed to describe it more fully, as follows:

Figure l of the accompanying drawings represents a perspective view of the said engine. Fig. 2 is a sectional view of the same.

F F is the revolving piston, upon which is raised an eccentric abutment or stop of the form of H, reaching to the interior concave surface of the cylinder I I, against which it makes a steam-tight joint.l G is the main shaft, upon which it turns. E D C is a section of the slide-valve, which is of that construction; B B, the steam-chest; M and N, the entry-ports, and L the exhaust. A is a small barrel, open at both ends, in which fits the piston G. Y

To use my said invention, the steam is let in at the entry-port M, and, passing down through N into the cylinder, impinges upon H, and exerts upon it both its expansive force and its momentum. H will then be driven around the circle in the direction of H K K' K. When, in its revolution, the eccentric side of Hbegins to press against the valve E,

it will begin to raise it, and, as it moves on,

finally brings it so high that the lower edge of I it will be iiush with the interior surface of the cylinder. H will then pass it. When it is clear of H, its own weight will cause it to fall again against the convex surface of F F. This process will be repeated-each revolution as long as the engine continues in motion, the steam which had lled K K K" being each time eX- hausted at L.

To prevent the valve E from coming down with a jolt, thel barrel A and the piston-head O are arranged, as represented'in said Fig. 2,

so that the steam in the chest -B will press.

upon the under side of the said C, and so cause it to fall more gradually, and thereby prevent any jolting or pounding that its fall would otherwise produce.

What I claim, and desire to secure by Letters Patent, is-

1. rlhe valve C D E, constructed substantially as set forth.

'2. The combination of all the parts described in one device, constructed in the manner and for the purpose substantially as set forth.

In testimony that I claim the foregoing specification I have hereunto set my hand this 1st day of February, 1868.

OHAS. Gr. FOOTE.

Witnesses:

CEAS. WERBE, N. S. BAKER. 

